docs/templates: add note about escaping
If some tries to copy and paste the isotime examples with options into a template, the parser will fail.
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@ -121,6 +121,25 @@ isotime = June 7, 7:22:43pm 2014
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{{isotime "Hour15Year200603"}} = Hour19Year201407
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```
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Please note that double quote characters need escaping inside of templates:
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```javascript
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{
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"builders": [
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{
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"type": "amazon-ebs",
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"access_key": "...",
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"secret_key": "...",
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"region": "us-east-1",
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"source_ami": "ami-de0d9eb7",
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"instance_type": "t1.micro",
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"ssh_username": "ubuntu",
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"ami_name": "packer {{isotime \"2006-01-02\"}}"
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}
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]
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}
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```
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## Amazon Specific Functions
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Specific to Amazon builders:
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